Which of the following can show the author' s true attitude?
A.Adams had ability, but he had no chance to show it.
B.As a President, Adams was unfit for his work.
C.Adams was not an effective man.
D.Adams was worth respecting.
第2题
A.使用set命令只显示所有的局域变量
B.使用set命令显示所有的变量,其中既包括了局部变量,也包括了环境变量
C.使用env命令显示环境变量
D.使用echo命令显示所有的变量
第7题
B./var/log/messages
C./var/log/http.log
D./var/log/boot.log
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